The action handler just updates the single state tree with new fetched array of dashboard items, so the new array can be rendered in the src/routes/routes/Dashboard/containers/DashboardContainer.js related components.

4) In the same file (src/routes/routes/Dashboard/modules/dashboard.js) we continue to improve the Action Handlers:

At this step, we have everything regarding the redux reducers (constants, actions and action handlers).

5) We need just to import the fetchDashboardDataAsync function into the src/routes/Dashboard/containers/DashboardContainer.js

and then we change the component properly at src/routes/Dashboard/components/Dashboard.js: